发明名称 |
NAVIGATION MAP CREATION SYSTEM |
摘要 |
<p>It is provided a method of converting cartographic features represented in an electronic map to clothoid sections, comprising converting at least part of a cartographic feature to at least one clothoid section, where converting comprises converting a straight line data model to a clothoid data model; and verifying that the clothoid section represents the part of the cartographic feature; wherein verifying comprises determining a distance between at least one point in the straight line data model and a nearest point in the clothoid data model, and wherein determining the distance comprises: transforming the at least one point located in an original space to a transformed point located in a unit clothoid space; determining the distance between the at least one point and a unit clothoid; determining a region in the unit clothoid space in which the transformed point is located; selecting boundaries on the unit clothoid in accordance with the determined region; and iteratively adjusting the boundaries to identify a determined distance.</p> |
申请公布号 |
EP1381828(B1) |
申请公布日期 |
2011.09.14 |
申请号 |
EP20030731113 |
申请日期 |
2003.05.07 |
申请人 |
HARMAN INTERNATIONAL INDUSTRIES, INC. |
发明人 |
NAGEL, PHILIPP, HARALD |
分类号 |
G01C21/32;G09B29/00;G01C21/00;G06F19/00;G06K9/00;G06T17/50;G08G1/0969;G08G1/137;G09B29/10 |
主分类号 |
G01C21/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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